At one point in time, the most common format used for home recording as well as for recording commercial movies for sale was VHS. While this was not always the best format, it was certainly the best marketed. Today, however, it makes more sense to have home movies stored on DVDs which take up considerably less space and are far more durable than VHS cassettes.
The same can be said for movies that individuals buy for their own viewing pleasure in their own home. Given the number of VHS cassettes in circulation in the change vhs to dvd number of movies some people purchase in a year, it only makes sense that they can save time and money with VHS to DVD service.
While copyrighted materials such as prerecorded movies are not supposed to be copied, there is a loophole in the law that allows the owner of a purchased movie to make one copy that can be used as is working copy while the original is stored in an archive. Because many movies that were made years ago when released on VHS have not been rereleased as DVDs, there are many reasons why it is difficult to upgrade a complete collection from VHS to DVD.

A VHS to DVD service can take these old cassettes and using a computer capture the images stored on the tapes and record them onto a DVD. This will allow the person who has already purchased this movie once to gain an upgraded copy that can be played in a DVD player without change vhs to dvd having to search for a new copy of this movie in stores.
It is also considerably less expensive to make a copy on DVD than it would be to purchase the movie again when one has already paid for it once. After all, the average price of movies on DVD is currently around 13 USD. This figure takes into account new releases that may be priced at over and older releases that may be priced as low as five USD.